com.flexive.shared.media.impl
Class FxMediaNativeEngine

java.lang.Object
  com.flexive.shared.media.impl.FxMediaNativeEngine

public class FxMediaNativeEngine
extends java.lang.Object

Java native Engine This engine relies on java image io and apache sanselan

Version:

$Rev: 2396 $

Author:

Markus Plesser (markus.plesser@flexive.com), UCS - unique computing solutions gmbh (http://www.ucs.at)

Constructor Summary

FxMediaNativeEngine()

Method Summary

static java.lang.String	detectMimeType(byte[] header, java.lang.String fileName) Detect the mimetype of a file based on the first n bytes and the filename
static org.apache.sanselan.ImageFormat	getImageFormatByExtension(java.lang.String extension) Get the image format based on the extension
static org.apache.sanselan.ImageFormat	getImageFormatByMimeType(java.lang.String mimeType) Get the image format based on the mime type
static FxMetadata	identify(java.lang.String mimeType, java.io.File file) Identify a file, returning metadata
static java.awt.image.BufferedImage	scale(java.awt.image.BufferedImage bi, int width, int height)
static int[]	scale(java.io.File original, java.io.File scaled, java.lang.String extension, int width, int height) Scale an image and return the dimensions (width and height) as int array
static int[]	scale(java.lang.String originalFileName, java.io.File scaled, java.lang.String extension, int width, int height) Scale an image and return the dimensions (width and height) as int array
static void	streamingManipulate(byte[] data, java.io.OutputStream out, BinaryDownloadCallback callback, java.lang.String mimeType, FxMediaSelector selector) Manipulate image raw data and stream them back

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FxMediaNativeEngine

public FxMediaNativeEngine()

Method Detail

scale

public static int[] scale(java.io.File original,
                          java.io.File scaled,
                          java.lang.String extension,
                          int width,
                          int height)
                   throws FxApplicationException

Scale an image and return the dimensions (width and height) as int array

Parameters:

original - original file

scaled - scaled file

extension - extension

width - desired width

height - desired height

Returns:

actual width ([0]) and height ([1]) of scaled image

Throws:

FxApplicationException - on errors

scale

public static int[] scale(java.lang.String originalFileName,
                          java.io.File scaled,
                          java.lang.String extension,
                          int width,
                          int height)
                   throws FxApplicationException

Scale an image and return the dimensions (width and height) as int array

Parameters:

originalFileName - original file name (+path)

scaled - scaled file

extension - extension

width - desired width

height - desired height

Returns:

actual width ([0]) and height ([1]) of scaled image

Throws:

FxApplicationException - on errors

Since:

3.1.4

scale

public static java.awt.image.BufferedImage scale(java.awt.image.BufferedImage bi,
                                                 int width,
                                                 int height)

getImageFormatByExtension

public static org.apache.sanselan.ImageFormat getImageFormatByExtension(java.lang.String extension)

Get the image format based on the extension

Parameters:

extension - image file extension

Returns:

ImageFormat (fallback to GIF if unknown)

getImageFormatByMimeType

public static org.apache.sanselan.ImageFormat getImageFormatByMimeType(java.lang.String mimeType)

Get the image format based on the mime type

Parameters:

mimeType - image mime type

Returns:

ImageFormat (fallback to GIF if unknown)

identify

public static FxMetadata identify(java.lang.String mimeType,
                                  java.io.File file)
                           throws FxApplicationException

Identify a file, returning metadata

Parameters:

mimeType - if not null it will be used to call the correct identify routine

file - the file to identify

Returns:

metadata

Throws:

FxApplicationException - on errors

streamingManipulate

public static void streamingManipulate(byte[] data,
                                       java.io.OutputStream out,
                                       BinaryDownloadCallback callback,
                                       java.lang.String mimeType,
                                       FxMediaSelector selector)
                                throws FxApplicationException

Manipulate image raw data and stream them back

Parameters:

data - raw image data

out - stream

callback - optional callback to set mimetype and size

mimeType - mimetype

selector - operations to apply

Throws:

FxApplicationException - on errors

detectMimeType

public static java.lang.String detectMimeType(byte[] header,
                                              java.lang.String fileName)

Detect the mimetype of a file based on the first n bytes and the filename

Parameters:

header - first n bytes of the file to examine

fileName - filename

Returns:

detected mimetype